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JPL Small-Body Database Browser
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7977 (1977 QQ5)
Classification: Amor [NEO]          SPK-ID: 2007977
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 210 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4664929341491683 5.7913e-08  
a 2.225404430853499 6.8081e-09 au
q 1.18726898823609 1.2755e-07 au
i 25.16294468213156 5.9959e-06 deg
node 134.1893981191747 1.0834e-05 deg
peri 248.0732452000729 1.2958e-05 deg
M 179.8640146192829 1.0461e-05 deg
tp 2457994.666015665798
(2017-Aug-29.16601567)
3.3678e-05 TDB
period 1212.584044796087
3.32
5.5644e-06
1.523e-08
d
yr
n .2968866377097507 1.3624e-09 deg/d
Q 3.263539873470908 9.984e-09 au
  Orbit Determination Parameters
   # obs. used (total)      988  
   data-arc span      23444 days (64.19 yr)  
   first obs. used      1955-03-23  
   last obs. used      2019-05-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50885  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jun-03 06:44:10  

Additional Information
 Earth MOID = .355004 au 
 Jupiter MOID = 2.65056 au 
 T_jup = 3.385 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO319185  
rotation period rot_per 7.456 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Warner, B.D. (2018) Minor Planet Bull. 45, 248-256.]
SMASSII spectral type spec_B S   n/a EAR-A-5-DDR-TAXONOMY-V4.0 based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002)

7977 (1977 QQ5)          Discovered 1977-Aug-21 by McNaught, R. H. at Siding Spring
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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